CN206876489U - A kind of irradiation of four axles slow strain rate tension promotes stress corrosion (cracking) test machine - Google Patents
A kind of irradiation of four axles slow strain rate tension promotes stress corrosion (cracking) test machine Download PDFInfo
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- CN206876489U CN206876489U CN201720715423.0U CN201720715423U CN206876489U CN 206876489 U CN206876489 U CN 206876489U CN 201720715423 U CN201720715423 U CN 201720715423U CN 206876489 U CN206876489 U CN 206876489U
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- autoclave
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Abstract
The utility model belongs to stress etching experiment field, and the irradiation of specially a kind of four axles slow strain rate tension promotes stress corrosion (cracking) test machine, solves the problems such as traditional uniaxial tensile test efficiency is low.The device is mainly made up of HTHP circulation, autoclave, four axle stretching devices, data collecting system etc., and HTHP circulation is connected with autoclave, and irradiated sample is arranged in autoclave, and sample is connected by specimen holder with stretching device.HTHP circulation is that high-temperature high pressure water needed for experiment is provided in autoclave, and four axle stretching devices carry out slow strain rate tension, data collecting system automatic data collection record experimental data to the irradiated sample in autoclave.Wherein, four axle stretching devices are made up of servo, self-balancing kettle out-draw device, force snesor, universal joint and force transmitting board etc..The utility model can realize four axles while load that the irradiation that can carry out four samples simultaneously promotes stress etching experiment, is greatly enhanced conventional efficient.
Description
Technical field
The utility model belongs to stress etching experiment field, is related to slow strain rate tension stress under HTHP water environment
Corrosion testing machine, particularly a kind of irradiation for carrying four axle stretching devices promotes stress corrosion (cracking) test machine, after studying irradiation
Sensitivity of Stress Corrosion of the sample under HTHP water environment, to evaluate military service of the material under HTHP water environment
Energy.
Background technology
Nuclear power structure material and its part are on active service for a long time in the severe rugged environments such as high-temperature high pressure water, irradiation, and what it was on active service can
It is an important factor for influenceing nuclear power station safety in operation and economy by property and stability.The core structure material such as austenitic stainless steel
Material in high-temperature high pressure water corrosive environment for a long time in strong neutron irradiation with being on active service, under the reciprocation of irradiation, corrosion with stress
Irradiation can occur and promote stress corrosion cracking (IASCC).The countries such as Europe, the United States, day, in-service pressurized water reactor core coaming plate are connected with stainless
During the Ni-based X-750 alloys support pin of Steel Bolt and CRDM guide pipe, a lot of IASCC failures things have occurred
Part.Germinating time of the IASCC crackles under actual Service Environment is general longer, usually requires in laboratory conditions using acceleration
Experiment, certain tension/strain is applied to sample to promote the germinating of crackle.
Common experimental method is slow strain rate tension experiment, and the method can efficiently contrast different materials or material of the same race
Expect the IASCC sensitiveness under varying environment, different radiation parameters.Irradiated sample is different from traditional stress corrosion sample, irradiation
Sample is typically mostly that gauge length section be square small-sized non-standard sample, due to irradiation, the reason such as sample is special and equipment is short of.Mesh
Before, domestic not yet system carries out the IASCC researchs for being directed to home made materials, therefore a set of for studying irradiation rush there is an urgent need to research and develop
Enter the experimental facilities of stress corrosion.
Utility model content
The utility model purpose is to provide one kind, and exposed material stress corrosion to be studied under HTHP water environment quick
The testing machine of perception, solve irradiation present in prior art and promote stress etching experiment equipment research and development shortcoming, traditional single shaft is drawn
Stretch the problems such as conventional efficient is low.
To achieve the above object, technical scheme is as follows used by the utility model：
A kind of irradiation of four axles slow strain rate tension promotes stress corrosion (cracking) test machine, and the testing machine follows including HTHP
Ring water system, autoclave, four axle stretching devices, the part of data collecting system four, wherein：HTHP circulation and high pressure
Kettle is connected, and autoclave, which is inverted, to be fixed on internal force elimination pillar；Four axle stretching devices are provided with clamping device and self-balancing kettle in kettle
Out-draw device, clamping device is arranged in autoclave in kettle, and irradiated sample both ends pass through specimen holder with being drawn outside self-balancing kettle
Stretch device to be connected, data collecting system is connected with the force snesor on self-balancing kettle out-draw device, and data collecting system is by power
Force signal caused by sensor is exported to data collecting card, the output end connection of data collecting card by signal amplifier and calculated
Machine.
The irradiation of four described axle slow strain rate tensions promotes stress corrosion (cracking) test machine, and autoclave is on kettle and kettle cover
Lower setting structure, kettle cover bottom are connected by connector with servo, set water inlet and delivery port, HTHP to follow in kettle cover
Ring water system is connected by water inlet and delivery port with kettle, and servo carries out stretching experiment to the irradiated sample in autoclave；
HTHP circulation is that high-temperature high pressure water needed for experiment is provided in autoclave, accurate by HTHP circulation
Water chemistry parameter in control loop, slow judgement of speed change is carried out to the irradiated sample in autoclave by self-balancing kettle out-draw device
Rate is stretched, and experimental data is recorded by data collecting system automatic data collection.
The irradiation of four described axle slow strain rate tensions promotes stress corrosion (cracking) test machine, and whole testing machine is fixed on bottom plate
On, bottom plate on the ground, forms the integral structure that can be moved integrally by fastening foundation bolt；It is uniform on bottom plate to be oriented to branch
Post, guide stanchion are fixed with bottom plate by latching；Horizontally disposed fixed plate is connected with guide stanchion, is watched respectively from bottom to top
Machine fixed plate, kettle cover fixed plate, leading block fixed plate are taken, is fixed between fixed plate and guide stanchion with lock；It is logical at the top of kettle
Lifting-steel-rope connection is crossed, the runner of leading block fixed plate centre bore, leading block and lift is sequentially passed through, passes through lift
To lift the kettle of autoclave；Kettle cover is fixed in kettle cover fixed plate by flange, blending bolt fastening, and connection heat is handed on kettle cover
The water inlet and delivery port of parallel operation, the delivery port connection stainless steel tube on the inside of kettle cover stretch into autoclave body bottom, and servo passes through bolt
It is fixed in servo fixed plate；Internal force is connected between servo fixed plate and kettle cover fixed plate and eliminates pillar, internal force eliminates branch
Post both ends all with threaded connection, make kettle cover and servo be linked to be an entirety；It is provided with and is used among the lifting pulley fixed plate
By the circular hole of lifting-steel-rope, the parallel fixed block in lifting pulley fixed plate, make the lifting-steel-rope deflecting company through circular hole
To lift.
The irradiation of four described axle slow strain rate tensions promotes stress corrosion (cracking) test machine, and the top of autoclave kettle is set
Hanging bolt hole, the flange of kettle set kettle kingbolt hole, and autoclave kettle cover is in vertically communicated setting kettle cover fixing threaded hole, kettle
Kingbolt hole, the outer kingbolt hole of kettle cover, stretching axis hole, thermocouple hole, autoclave kettle cover are laterally setting intake-outlet, entered in lid
The mouth of a river and one end of delivery port are located at the side of kettle cover respectively, and the other end of water inlet and delivery port is located at the upper table of kettle cover respectively
Face；
Hanging bolt is installed in hanging bolt hole, passes through spiral shell between corresponding kettle kingbolt hole and the outer kingbolt hole of kettle cover
Tether and connect, kettle and kettle cover is connected；Kettle cover fixing threaded hole and internal force eliminate pillar 30 and are connected kettle cover, stretch axis hole
Tensile axis is worn, thermocouple hole wears thermocouple.
The irradiation of four described axle slow strain rate tensions promotes stress corrosion (cracking) test machine, and clamping device includes in kettle：Draw
Stretch sample, fixture one, fixture two, fixture three, fixture four, kettle inner support plate, the both ends of tensile sample respectively with examination
Sample fixture two three with fixture is connected by screw thread, and fixture one passes through company with fixture two, fixture three with fixture four
Pin connects, and connecting pin is with specimen holder by ceramic pipe insulation, and the upper end that fixture is four is connected with kettle inner support plate, fixture one
The lower end in portion is connected with tensile axis, and fixture one is insulated for four with fixture two, fixture three with fixture by potsherd.
The irradiation of four described axle slow strain rate tensions promotes stress corrosion (cracking) test machine, self-balancing kettle out-draw device bag
Include：Tensile axis, force snesor, force snesor connecting rod, universal joint, servo force transmitting board, one end of tensile axis pass through on kettle cover
Uniform stretching axis hole is directly protruding into kettle to be connected with the specimen holder of tensile sample, and the other end of tensile axis passes through connection
Part is connected with servo；
The lower end of tensile axis be sequentially connected downwards force snesor connecting rod, force snesor, universal joint, servo force transmitting board and
Servo, the outside of tensile axis set gradually water cooling plant, large shaft sleeve, little axle sleeve one, little axle sleeve two, large shaft sleeve peace from top to bottom
On kettle cover in uniform stretchable holes, large shaft sleeve is connected through a screw thread with kettle cover, and large shaft sleeve and the end face of kettle cover junction are close
Seal, be connected with water cooling plant on large shaft sleeve, large shaft sleeve is by external circulating water；Two little axle sleeves are oppositely arranged, little axle sleeve one, small
Connected between axle sleeve two by connecting rod, and holding position is relatively fixed, and passes through HTHP between little axle sleeve one, little axle sleeve two
Water lines connect, and make high-temperature high pressure water in little axle sleeve one, UNICOM is kept in little axle sleeve two, keep pressure balance, tensile axis with it is big
Sealed between axle sleeve, little axle sleeve one, little axle sleeve two by high resiliency fluororubber O-type ring.
The irradiation of four described axle slow strain rate tensions promotes stress corrosion (cracking) test machine, positioned at little axle sleeve one, little axle sleeve
Force transmitting board one is horizontally mounted on the outside of tensile axis between two, lower section and the force transmitting board two of force transmitting board one are oppositely arranged, force transmitting board one
It is connected between force transmitting board two by connecting rod, force snesor connecting rod is connected to by connecting rod, realize the transmission of loading, is passed
Power plate two-way is crossed force snesor connecting rod, force snesor, universal joint and servo force transmitting board and connected, and servo force transmitting board is installed on
In the servo connecting rod of servo.
The irradiation of four described axle slow strain rate tensions promotes stress corrosion (cracking) test machine, and servo acts on downwards, drives
Axial displacement is stretched, so as to drive tensile sample；Plus load pass sequentially through servo connecting rod, servo force transmitting board, universal joint,
Force snesor, force snesor connecting rod, tensile axis, specimen holder one, fixture two are delivered on tensile sample, are ensured simultaneously
Fixture one, fixture two, fixture four, fixture three, tensile sample, tensile axis, force snesor, force snesor connecting rod,
Universal joint and servo force transmitting board and universal joint connecting hole are on same vertical line, the centre bore and servo of servo force transmitting board
Connecting rod is on same vertical line.
The advantages of the utility model and beneficial effect：
1st, the utility model in the HTHP water environment of simulation nuclear power can irradiate the slow strain of nonstandard small sample
Speed (10-8~10-6/ s) stretching experiment, therefore the irradiation that can evaluate material promotes Sensitivity of Stress Corrosion；
2nd, the utility model uses four axle slow strain rate tensions, compared to traditional uniaxial loading stretching experiment, greatly carries
High conventional efficient；
3rd, the utility model realizes computer-automatic collection record data, and interface is clear, easy to operate；
4th, the utility model cost is cheap, simple to operate, reliable.
Brief description of the drawings
Fig. 1 is the utility model whole device structure chart.In figure, 2- kettlies；12- kettle covers；28- servos；29- kettle inner clips
Hold device；30- internal force eliminates pillar；31- self-balancing kettle out-draw devices；37- servo fixed plates；38- kettle cover fixed plates；
39- bottom plates；40- lifting pulley fixed plates；41- lifting-steel-ropes；42- pulleys；43- lifts；44- guide stanchions.
Fig. 2-Fig. 3 is autoclave kettle structure figure.Wherein, Fig. 2 is front view；Fig. 3 is top view.In figure, 2- kettlies；
10- kettle kingbolts hole；32- hanging bolts hole.
Fig. 4-Fig. 5 is autoclave kettle cover structure chart.Wherein, Fig. 4 is upward view；Fig. 5 is K-K sectional views in Fig. 4.In figure,
12- kettle covers；The outer kingbolt hole of 13- kettle covers；14- stretches axis hole；33- kettle cover fixing threaded holes；Kingbolt hole in 34- kettle covers；35- enters
Delivery port；36- thermocouple holes.
Fig. 6 is that four axle stretching devices are schemed in detail.In figure, 1- hanging bolts；2- kettlies；3- kettle inner support plates；4- fixtures four
Portion；5- connecting pins；6- fixtures three；7- tensile samples；8- fixtures two；9- fixtures one；10- kettle kingbolts hole；11- is drawn
Stretch axle；12- kettle covers；The outer kingbolt hole of 13- kettle covers；14- stretches axis hole；15- water cooling plants；16- little axle sleeves one；17- connecting rods；
18- force transmitting boards one；19- connecting rods；20- pipelines；21- little axle sleeves two；22- force transmitting boards two；23- force snesor connecting rods；24- power
Sensor；25- universal joints；26- servo force transmitting boards；27- servo connecting rods；28- servos；45- large shaft sleeves.
Embodiment
As shown in figure 1, the utility model provide it is a kind of can after test irradiation under HTHP circulates water environment material
Sensitivity of Stress Corrosion testing machine, the testing machine is mainly by HTHP circulation, autoclave, four axle stretching device (kettles
Interior clamping device 29 and self-balancing kettle out-draw device 31), the part of data collecting system four composition, wherein：HTHP circulates
Water system is connected with autoclave, and autoclave, which is inverted, to be fixed on four circular internal force elimination pillars 30, and clamping device 29 is set in kettle
It is placed in autoclave, irradiated sample both ends are connected by specimen holder with self-balancing kettle out-draw device 31, data collecting system
It is connected with the force snesor 24 on self-balancing kettle out-draw device 31, data collecting system leads to force signal caused by force snesor
Cross signal amplifier to export to data collecting card, the output end connection computer of data collecting card, Experiment Data Records are stored in
In computer.Autoclave is 12 structure setting up and down of kettle 2 and kettle cover, and the bottom of kettle cover 12 is connected by connector and servo 28
Connect, set water inlet and delivery port, HTHP circulation to connect by water inlet and delivery port with kettle 2 in kettle cover 12
It is logical.Servo carries panel operation, can set control model in a conventional manner：Load, displacement etc., so as to in autoclave
Irradiated sample carries out stretching experiment.HTHP circulation is high-temperature high pressure water needed for offer experiment in autoclave, is passed through
HTHP circulation accurately controls the water chemistry parameters such as dissolved oxygen (DO) in loop, dissolved hydrogen (DH), electrical conductivity,
Slow strain rate tension is carried out to the irradiated sample in autoclave by self-balancing kettle out-draw device 31, passes through data acquisition system
Automatic data collection of uniting record experimental data.
Autoclave is 316 stainless steel autoclaves, volume 3L, design temperature and pressure (400 DEG C, 24MPa).For reality
Convenient loading during testing, autoclave is is inverted shape, i.e. kettle cover 12 is under, and kettle 2 is upper.Whole device fixes one piece of big bottom
On plate 39, and bottom plate 39 by fastening foundation bolt on the ground, entirely test machine integrated, can move integrally.On bottom plate 39
Uniform four guide stanchions 44, guide stanchion 44 are fixed with bottom plate 39 by latching.Three blocks of water are connected with four guide stanchions 44
The flat fixed plate set, is servo fixed plate 37, kettle cover fixed plate 38, leading block fixed plate 40 respectively from bottom to top, Gu
Same between fixed board and guide stanchion 44 to be fixed with lock, can fix also can upper and lower adjusting position.The top of kettle 2 passes through hoisting steel
Rope 41 connects, and sequentially passes through the centre bore of leading block fixed plate 40, leading block 42 and the runner of lift 43, lift 43 and is used for
Lift autoclave.Kettle cover 12 is fixed in kettle cover fixed plate 38 by flange, blending bolt fastening, and heat exchange is connected on kettle cover 12
The water inlet and delivery port of device, the delivery port of the inner side of kettle cover 12 connect a stainless steel tube, stretch into the bottom of kettle 2.Servo 28
Equally it is fixed by bolts in servo fixed plate 37.Four internal force are connected between servo fixed plate 37 and kettle cover fixed plate 38
Pillar 30 is eliminated, internal force eliminates the both ends of pillar 30 all with threaded connection, kettle cover 12 and servo 28 is linked to be an entirety, so
Loading force just directly acts on the influence on the ground, eliminating internal force by four internal force elimination pillars 30 during stretching.The lifting
Circular hole is provided among pulley fixed plate 40, it is parallel in lifting pulley fixed plate 40 to fix two for by lifting-steel-rope 41
Pulley 42, the deflecting of lifting-steel-rope 41 through circular hole is set to be connected to lift 43.
As shown in Fig. 2-Fig. 6, circular flange is provided with the bottom of kettle 2 of autoclave, for laying kettle cover sealing ring, kettle
2 flange sets eight kettle kingbolt holes 10, and the top of autoclave kettle 2 sets three hanging bolt holes 32；Autoclave kettle
The kingbolt hole outside the kettle cover of 34, eight, kingbolt hole in vertically communicated setting four kettle cover fixing threaded holes, 33, four kettle covers of lid 12
13rd, four stretching axis holes 14, thermocouple holes 36, autoclave kettle cover 12 are laterally setting intake-outlet 35 (water inlet and delivery port
In relative 180 degree), one end of water inlet and delivery port is located at the other end of the side of kettle cover 12, water inlet and delivery port respectively
It is located at the upper surface of kettle cover 12 respectively.
Hanging bolt 1 is installed in hanging bolt hole 32, for connecting cable wire lifting kettle 2.Corresponding kettle kingbolt hole
It is bolted between 10 and the outer kingbolt hole 13 of kettle cover, kettle 2 and kettle cover 12 is connected and is sealed.Kettle cover fixes spiral shell
Hole 33 is located at the bottom surface of kettle cover 12 and keeps to the side to locate, and kettle cover fixing threaded hole 33 is symmetrical screwed hole, rectangular distribution, for being eliminated with internal force
Pillar 30 is connected kettle cover 12.Stretching axis hole 14 be distributed on on the same circle in the center of kettle cover 12, close to 2 positive one end of kettle
For through hole, for being screwed hole close to the bottom surface of kettle cover 12, for connecting large shaft sleeve 45 by tensile axis 11.Thermocouple hole 36
In the center of kettle cover 12, for wearing thermocouple.In addition, kingbolt hole 34 is screwed hole in kettle cover, be distributed on on kettle cover 12
Stretch on 14 same circle of axis hole, for fixing the support bar in autoclave.
As shown in Fig. 1, Fig. 6, four axle stretching devices include clamping device 29 and self-balancing kettle out-draw device 31 in kettle, its
In：
Clamping device 29 includes in kettle：Tensile sample 7, specimen holder (fixture one 9, fixture two 8, fixture three 6,
Fixture four 4), kettle inner support plate 3, the both ends of tensile sample 7 pass through screw thread for three 6 with specimen holder two 8 and fixture respectively
It is connected, fixture one 9 and fixture two 8, fixture three 6 and fixture are all connected for four 4 by connecting pin 5, connecting pin 5 and sample
By ceramic pipe insulation, the upper end that fixture is four 4 is connected fixture with kettle inner support plate 3, the lower end that fixture is one 9 and tensile axis 11
It is connected, fixture one 9 and fixture two 8, fixture three 6 are insulated for four 4 with fixture by potsherd.Fixture three 6, fixture four
The material in portion 4 is identical with the material of tensile sample, and such a design can effectively prevent tensile sample from galvanic corrosion occurs.
Self-balancing kettle out-draw device 31 includes：Tensile axis 11, force snesor 24, force snesor connecting rod 23, universal joint
25th, servo force transmitting board 26, one end of tensile axis 11 pass through four stretching axis holes 14 (sleeve sealing hole) uniform on kettle cover 12
It is directly protruding into kettle 2 and is connected with the specimen holder of tensile sample 7, the other end of tensile axis 11 passes through connector and servo
28 connections.
The lower end of tensile axis 11 is sequentially connected downwards force snesor connecting rod 23, force snesor 24, universal joint 25, servo
Force transmitting board 26 and servo 28, the outside of tensile axis 11 set gradually water cooling plant 15, large shaft sleeve 45, little axle sleeve one from top to bottom
16th, little axle sleeve 2 21, large shaft sleeve 45 are arranged in four stretchable holes 14 uniform on kettle cover, and large shaft sleeve 45 passes through spiral shell with kettle cover 12
Line connects, large shaft sleeve 45 and the end face seal of the junction of kettle cover 12, is connected with water cooling plant 15 on large shaft sleeve 45, large shaft sleeve 45 is by outer
Put circulating water；Two little axle sleeves are oppositely arranged, and are connected between little axle sleeve 1, little axle sleeve 2 21 by three connecting rods 17
Connect, and holding position is relatively fixed, and is connected between little axle sleeve 1, little axle sleeve 2 21 by water under high pressure pipeline 20, is made water under high pressure
UNICOM is kept in little axle sleeve 1, little axle sleeve 2 21, keeps pressure balance, tensile axis 11 is in loading procedure not by autoclave
Interior pressure influence, make experiment more accurate, pass through between tensile axis 11 and large shaft sleeve 45, little axle sleeve 1, little axle sleeve 2 21
High resiliency fluororubber O-type ring seals, and ensures that tensile axis keeps good sealing property in loading.
Screw thread is provided with tensile axis 11 between little axle sleeve 1, little axle sleeve 2 21, force transmitting board 1 is connected at screw thread, passes
The both sides of power plate 1 are fixed with nut, and can stretched by rotating the change force transmitting board 1 of the screw thread on force transmitting board 1
Position on axle 11, so as to adjust stretchable displacement.The outside of tensile axis 11 between little axle sleeve 1, little axle sleeve 2 21
Force transmitting board 1 is horizontally mounted, lower section and the force transmitting board 2 22 of force transmitting board 1 are oppositely arranged, force transmitting board 1 and force transmitting board two
Connected between 22 by connecting rod 19, force snesor connecting rod 23 is connected to by connecting rod 19, realizes the transmission of loading.
Through hole is provided among force transmitting board 2 22, for connecting force snesor connecting rod 23, the both sides spiral shell of force transmitting board 2 22
Mother is fixed, ensures that force transmitting board 2 22 is horizontal；Force transmitting board 2 22 is provided with four uniform through holes, for universal-joint 25, universal joint
25 are fastened on force transmitting board 2 22 by nut, ensure the uniformity of four axial displacements movement；Force transmitting board 2 22 passes through force snesor
Connecting rod 23, force snesor 24, universal joint 25 are connected with servo force transmitting board 26, and it is logical that one is provided among servo force transmitting board 26
Hole, for connecting servo 28, servo force transmitting board 26 is installed in the servo connecting rod 27 of servo 28.
Servo 28 acts on downwards, the displacement of tensile axis 11 is driven, so as to drive tensile sample 7.Plus load passes sequentially through
Servo connecting rod 27, servo force transmitting board 26, universal joint 25, force snesor 24, force snesor connecting rod 23, tensile axis 11,
Specimen holder one 9, fixture are delivered on tensile sample 7 for two 8, while ensure fixture (fixture one 9, fixture two 8, folder
Tool four 4, fixture three 6), tensile sample 7, tensile axis 11, force snesor 24, force snesor connecting rod 23, universal joint 25 and
With the connecting hole of universal joint 25 on same vertical line, centre bore and the servo of servo force transmitting board 26 connect servo force transmitting board 26
Extension bar 27 is on same vertical line；The self-balancing kettle out-draw device 31 also includes one and eliminates power apparatus in loading, for disappearing
The internal force acted on during except loading, eliminate power apparatus in loading and eliminate pillar 30 and kettle by four internal force by servo fixed plate 37
Lid fixed plate 38 is connected to form, and servo fixed plate 37 sets (Fig. 1) with the relative level of kettle cover fixed plate 38.
As shown in figs 1 to 6, the utility model is used to study stress corrosion of the irradiated sample under HTHP water environment
Sensitiveness, concrete operation step are as follows：
1st, to HTHP circulation inject deionized water, for experiment provide needed for recirculated water.
2nd, tensile sample is assembled.First, start lift 43, drive kettle 2 to move up, separate kettle 2 and kettle cover 12.So
Afterwards, by fixture one 9 be fastened on tensile axis 11, fixture hangs in kettle inner support plate 3 for four 4 and (leaves gap, do not fasten),
On the fixture that then fixture is fixed on tensile axis 11 for two 8 one 9, operation servo 28 moves up tensile axis 11,
After tensile sample upper-end contact is to fixture four 4, stationary fixture four 4 and the fixture three 6 for being connected with tensile sample 7；Finally,
With small torque spanner fastening clips four 4 and kettle inner support plate 3, make that there is identical pretightning force on four tensile axis 11.
3rd, kettle is closed.After installing four tensile samples 7, lift 43 is operated, kettle 2 is put down, makes kettle 2 and kettle cover 12 abundant
With reference to then tightening kettle cover kingbolt, autoclave be fully sealed.
4th, operating circulating water.The water in loop is full of kettle 2, regulating loop flow, removed by ion exchange resin
Impurity in loop, until resistivity meets requirement of experiment；Removal of impurities is then closed, adds solution needed for experiment；Then by loop
Pressure rises to pressure needed for experiment；Last loop is warming up to experiment design temperature.
5th, the stabilization sub stage.Treat that temperature rises to experiment design temperature, stablize 48 to 72 hours.
6th, stretching experiment.Open data collecting system, acquisition and recording experimental data.The control panel of servo 28 is opened, if
Determine tension test parameter (control model, rate of extension, long stroke, halt condition etc.), start to load.
7th, experiment is stopped.After stretching experiment reaches the condition of setting, stop servo, preserve experimental data, Ran Houguan
Preheater and autoclave heating switch are closed, treats that loop temperature is down to room temperature, experiment terminates.
Below, the utility model is further described by embodiment.
Embodiment 1
In the present embodiment, irradiation dose be 1.5dpa and 5dpa the domestic stainless steel of core level 304 320 DEG C, 13MPa,
Slow strain rate tension experiment in 2.6ppm dissolved hydrogen environment, strain rate are 3 × 10-7/ s, dependent variable are 1% and 3%.
Experiment material is the domestic stainless steel of core level 304, and the tensile sample of irradiation, gauge length size is 21mm × 2mm × 2mm.
Sample irradiation is completed in Univ Michigan-Ann Arbor USA Ion Beam Surface Modification and assay laboratory, and irradiation uses energy as 2MeV, directly
The proton beam that footpath is 3mm simulates neutron irradiation, and irradiation damage speed is 6 × 10-6Dpa/s, irradiation temperature are 360 DEG C.Irradiation
Tensile sample afterwards is fixed on fixture, tightens autoclave, runs water circulation, water chemistry condition needed for control experiment, setting is in fact
Test 320 DEG C of temperature.After temperature in the kettle reaches design temperature, stablize 72 hours, then service data acquisition system, opens servo
Machine control panel, control model is set as displacement, strain rate is 3 × 10-7/ s, stopping boundary condition are 1% and 3% strain amplitude
Value.Be cooled to room temperature, take out sample, observe surface topography, with face crack number and length compare material irradiation promotion
Sensitivity of Stress Corrosion.It can see from specimen surface pattern, 5dpa specimen surface crackles are significantly more than 1.5dpa samples, explanation
Irradiation promotes the Sensitivity of Stress Corrosion of material.
Embodiment result shows that the utility model can realize four axles while load, and can carry out the spoke of four samples simultaneously
According to stress etching experiment is promoted, conventional efficient is greatly enhanced.
Claims (8)
1. a kind of irradiation of four axles slow strain rate tension promotes stress corrosion (cracking) test machine, it is characterised in that the testing machine includes
HTHP circulation, autoclave, four axle stretching devices, the part of data collecting system four, wherein：HTHP recirculated water
System is connected with autoclave, and autoclave, which is inverted, to be fixed on internal force elimination pillar；Four axle stretching devices are provided with clamping device in kettle
With self-balancing kettle out-draw device, clamping device is arranged in autoclave in kettle, irradiated sample both ends pass through specimen holder with from
Equilibrium still out-draw device is connected, and data collecting system is connected with the force snesor on self-balancing kettle out-draw device, and data are adopted
Collecting system exports force signal caused by force snesor to data collecting card, the output end of data collecting card by signal amplifier
Connect computer.
2. promoting stress corrosion (cracking) test machine according to the irradiation of four axle slow strain rate tensions described in claim 1, its feature exists
Be that kettle and kettle cover structure setting up and down, kettle cover bottom are connected by connector with servo in, autoclave, set in kettle cover into
The mouth of a river and delivery port, HTHP circulation are connected by water inlet and delivery port with kettle, and servo is in autoclave
Irradiated sample carry out stretching experiment；HTHP circulation is that high-temperature high pressure water needed for experiment is provided in autoclave, is led to
The water chemistry parameter crossed in the accurate control loop of high temperature cycle of higher pressure water system, by self-balancing kettle out-draw device to autoclave
Interior irradiated sample carries out slow strain rate tension, and experimental data is recorded by data collecting system automatic data collection.
3. promoting stress corrosion (cracking) test machine according to the irradiation of four axle slow strain rate tensions described in claim 1, its feature exists
In whole testing machine is fixed on bottom plate, and bottom plate on the ground, forms the integration that can be moved integrally by fastening foundation bolt
Structure；Uniform guide stanchion on bottom plate, guide stanchion are fixed with bottom plate by latching；It is connected with guide stanchion horizontally disposed solid
Fixed board, it is servo fixed plate, kettle cover fixed plate, leading block fixed plate respectively from bottom to top, between fixed plate and guide stanchion
Fixed with lock；Connected at the top of kettle by lifting-steel-rope, sequentially pass through leading block fixed plate centre bore, leading block and liter
The runner of drop machine, the kettle of autoclave is lifted by lift；Kettle cover is fixed in kettle cover fixed plate by flange, and uses spiral shell
Bolt fastens, the water inlet and delivery port of connection heat exchanger on kettle cover, and the delivery port connection stainless steel tube on the inside of kettle cover stretches into kettle
Body bottom, servo are bolted in servo fixed plate；In being connected between servo fixed plate and kettle cover fixed plate
Power eliminates pillar, and internal force eliminates pillar both ends all with threaded connection, kettle cover and servo is linked to be an entirety；Described be oriented to is slided
Take turns to be provided among fixed plate and be used for by the circular hole of lifting-steel-rope, the parallel fixed block in leading block fixed plate, make through
The lifting-steel-rope deflecting of circular hole is connected to lift.
4. promoting stress corrosion (cracking) test machine according to the irradiation of four axle slow strain rate tensions described in claim 1, its feature exists
In the top of autoclave kettle sets hanging bolt hole, and the flange of kettle sets kettle kingbolt hole, and autoclave kettle cover is vertical
Kingbolt hole, the outer kingbolt hole of kettle cover, stretching axis hole, thermocouple hole, autoclave kettle in insertion setting kettle cover fixing threaded hole, kettle cover
Cover and intake-outlet is laterally being set, one end of water inlet and delivery port is located at the side of kettle cover respectively, water inlet and delivery port
The other end is located at the upper surface of kettle cover respectively；
Hanging bolt is installed in hanging bolt hole, is connected between corresponding kettle kingbolt hole and the outer kingbolt hole of kettle cover by bolt
Connect, kettle and kettle cover is connected；Kettle cover fixing threaded hole and internal force eliminate pillar 30 and are connected kettle cover, and stretching axis hole is worn
Tensile axis, thermocouple hole wear thermocouple.
5. promoting stress corrosion (cracking) test machine according to the irradiation of four axle slow strain rate tensions described in claim 1, its feature exists
In clamping device includes in kettle：Tensile sample, fixture one, fixture two, fixture three, fixture four, kettle inner support plate,
The both ends of tensile sample are connected with specimen holder two and fixture three by screw thread respectively, fixture one and fixture two, folder
Tool three is with fixture four by being connected pin connection, and connecting pin and specimen holder are by ceramic pipe insulation, the upper end that fixture is four
It is connected with kettle inner support plate, the lower end that fixture is one is connected with tensile axis, fixture one and fixture two, fixture three and fixture
Four are insulated by potsherd.
6. promoting stress corrosion (cracking) test machine according to the irradiation of four axle slow strain rate tensions described in claim 1, its feature exists
In self-balancing kettle out-draw device includes：Tensile axis, force snesor, force snesor connecting rod, universal joint, servo force transmitting board,
One end of tensile axis is directly protruding into kettle by stretching axis hole uniform on kettle cover to be connected with the specimen holder of tensile sample,
The other end of tensile axis is connected by connector with servo；
The lower end of tensile axis is sequentially connected downwards force snesor connecting rod, force snesor, universal joint, servo force transmitting board and servo
Machine, the outside of tensile axis set gradually water cooling plant, large shaft sleeve, little axle sleeve one, little axle sleeve two from top to bottom, and large shaft sleeve is arranged on
On kettle cover in uniform stretchable holes, large shaft sleeve is connected through a screw thread with kettle cover, large shaft sleeve and the end face seal of kettle cover junction, greatly
Water cooling plant is connected with axle sleeve, large shaft sleeve is by external circulating water；Two little axle sleeves are oppositely arranged, little axle sleeve one, little axle sleeve
Connected between two by connecting rod, and holding position is relatively fixed, and passes through HTHP water pipe between little axle sleeve one, little axle sleeve two
Road connects, and makes high-temperature high pressure water in little axle sleeve one, UNICOM is kept in little axle sleeve two, keeps pressure balance, tensile axis and large shaft sleeve,
Sealed between little axle sleeve one, little axle sleeve two by high resiliency fluororubber O-type ring.
7. promoting stress corrosion (cracking) test machine according to the irradiation of four axle slow strain rate tensions described in claim 6, its feature exists
In the tensile axis outside between little axle sleeve one, little axle sleeve two is horizontally mounted force transmitting board one, the lower section of force transmitting board one and power transmission
Plate two is oppositely arranged, and is connected between force transmitting board one and force transmitting board two by connecting rod, and being connected to force snesor by connecting rod connects
Extension bar, realizes the transmission of loading, and force transmitting board two-way crosses force snesor connecting rod, force snesor, universal joint and servo force transmitting board
Connection, servo force transmitting board are installed in the servo connecting rod of servo.
8. promoting stress corrosion (cracking) test machine according to the irradiation of four axle slow strain rate tensions described in claim 6, its feature exists
In servo acts on downwards, stretching axial displacement is driven, so as to drive tensile sample；Plus load passes sequentially through servo connection
Two bar, servo force transmitting board, universal joint, force snesor, force snesor connecting rod, tensile axis, specimen holder one, fixture biographies
It is delivered on tensile sample, while ensures fixture one, fixture two, fixture four, fixture three, tensile sample, tensile axis, power
Sensor, force snesor connecting rod, universal joint and servo force transmitting board and universal joint connecting hole are on same vertical line, servo
The centre bore of force transmitting board is with servo connecting rod on same vertical line.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109238895A (en) * | 2018-07-20 | 2019-01-18 | 苏州热工研究院有限公司 | Stress corrosion and environment fatigue high throughput test device and method |
| CN109238842A (en) * | 2018-07-20 | 2019-01-18 | 苏州热工研究院有限公司 | Stress corrosion high throughput evaluation method based on multi-section sample |
| CN109238896A (en) * | 2018-07-20 | 2019-01-18 | 苏州热工研究院有限公司 | Based on the concatenated stress corrosion high throughput evaluation method of multispecimen |
| CN111693449A (en) * | 2020-06-22 | 2020-09-22 | 中国核动力研究设计院 | Telescopic corrosion kettle and corrosion test method for liquid lead-bismuth alloy |
| CN113358551A (en) * | 2021-06-30 | 2021-09-07 | 天津大学 | Metal material high-pressure corrosion fatigue experimental device |
| CN114166651A (en) * | 2021-12-08 | 2022-03-11 | 北京科技大学 | In-service pressure-bearing equipment micro-sample high-temperature water stress corrosion test device and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109238895A (en) * | 2018-07-20 | 2019-01-18 | 苏州热工研究院有限公司 | Stress corrosion and environment fatigue high throughput test device and method |
| CN109238842A (en) * | 2018-07-20 | 2019-01-18 | 苏州热工研究院有限公司 | Stress corrosion high throughput evaluation method based on multi-section sample |
| CN109238896A (en) * | 2018-07-20 | 2019-01-18 | 苏州热工研究院有限公司 | Based on the concatenated stress corrosion high throughput evaluation method of multispecimen |
| CN111693449A (en) * | 2020-06-22 | 2020-09-22 | 中国核动力研究设计院 | Telescopic corrosion kettle and corrosion test method for liquid lead-bismuth alloy |
| CN111693449B (en) * | 2020-06-22 | 2022-05-17 | 中国核动力研究设计院 | Telescopic corrosion kettle and corrosion test method for liquid lead-bismuth alloy |
| CN113358551A (en) * | 2021-06-30 | 2021-09-07 | 天津大学 | Metal material high-pressure corrosion fatigue experimental device |
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